do-while Menu

Lab Java Intermediate 20 points

Simulate a menu: read commands until 0. Command 1 X adds X to a total, 2 prints the total. Use a do-while loop. Print bye at the end.

Input

Commands, the last one is 0.

Output

Totals when requested, then bye.

Example

Input

Output

12
10
bye

Sample input available Sample output available

Editor

Java

Hints

A do-while loop always runs its body at least once.

Solution explanation

Menus are the classic use of do-while: show/read first, then decide whether to repeat.

Show solution

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int total = 0;
        int choice;
        do {
            choice = sc.nextInt();
            if (choice == 1) {
                total += sc.nextInt();
            } else if (choice == 2) {
                System.out.println(total);
            }
        } while (choice != 0);
        System.out.println("bye");
    }
}

Output

Answer